Developing Countries: Angola, Ethiopia, Peru, Africa, Haiti, North Korea.
Devise an inexpensive and practical system to make it easy for villagers drilling water wells in remote areas to raise the rig’s drill head from as much as 15 m (50 ft)) below the ground.
We chose a single-speed winch to accomplish this task. This small, portable winch mounts on one leg of a tripod positioned over the bore hole. The winch’s 1:1 mechanical advantage lets one person easily raise and lower the drill head. The low-friction winch handle features a ball bearing grip that efficiently transmits power into the winch.
The winch is constructed of hardcoat-anodized aluminum for wear resistance and durability The Delrin® bearing sleeve is almost maintenance free and requires only occasional cleaning.
Delrin® is a registered trademark of E. I. du Pont de Nemours and Company or its affiliates